Results 91 to 100 of about 5,995,861 (234)
CSEE Journal of Power and Energy SystemsThe cluster DC voltage balancing control adopting zero-sequence voltage injection is appropriate for the star-connected cascaded H-bridge STATCOM because no zero-sequence currents are generated in the three-phase three-wire system.
Kai Hu +6 more
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Zero‐echo‐time sequences in highly inhomogeneous fields
Magnetic Resonance in MedicineAbstractPurposeZero‐echo‐time (ZTE) sequences have proven a powerful tool for MRI of ultrashort tissues, but they fail to produce useful images in the presence of strong field inhomogeneities (14 000 ppm). Here we seek a method to correct reconstruction artifacts from non‐Cartesian acquisitions in highly inhomogeneous , where the standard double‐shot ...
Borreguero, Jose +3 more
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Gong-kuang zidonghua, 2010 The paper proposed a design scheme of selective leakage protection circuit based on method of amplitude discrimination and phase discrimination for electrical control equipments of fully mechanized devices of coal mine underground.The selective leakage ...
FAN Yi-long~, LI Hang~, YOU Guo-dong~
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Вестник Северо-Кавказского федерального университетаIntroduction. The tendency of growth in the number and increase in the installed capacity of single-phase nonlinear electric consumers leads to the deterioration of power quality.
A. A. Pesterev +2 more
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Minimal Zero Sequences of Finite Cyclic Groups
, 2004 If G is a finite Abelian group, let MZS(G, k) denote the set of minimal zero sequences of G of length k. In this paper we investigate the structure of the elements of this set, and the cardinality of the set itself. We do this for the class of groups G = Zn for k both small (k ≤ 4) and large (k > 2n/3 )
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Zero (sub-)sequences of entire functions
, 2015 We announce conditions under which a given sequence of points on the complex plane is a subsequence of zeros of an entire function with weight restrictions on growth.
Khabibullin, Bulat +2 more
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电力工程技术When the earth faults occur in different phases of two feeders connected to the same bus in the resonant grounding system, the conventional fault line selection devices are inaccurate.
HAN Jie +5 more
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Kongzhi Yu Xinxi Jishu, 2013 This paper illustrated var and negative sequence comprehensive compensation principles of cascaded static var generator(SVG) with star-configuration. The mathematical expression of zero-sequence voltage was deduced, and subsequently zero-sequence voltage
XIONG Qiaopo, LUO An, ZENG Zhizhen
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Research of Zero Sequence Current of Parallel System of PWM Rectifier
Gong-kuang zidonghua, 2012 Taking two-level parallel system of PWM rectifier as example, the paper analyzed cause of zero sequence circulation in parallel module: the circulation is generated by difference of duty cycle of zero sequence current of two modules; generation of the ...
NI Shuai +3 more
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